From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sun, 2 Oct 2016 21:06:44 +0000 (+0300)
Subject: drm/amdgpu: also track late init state
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8a2eef1dbc85273c57d6f2cf73e5d7c97b1a25f4;p=linux-beck.git

drm/amdgpu: also track late init state

Successful sw_init() and hw_init() states are tracked, but not
late_init(). Various error paths may result in amdgpu_fini() being
called before .late init is done, so late_init needs to be tracked
to avoid unexpected or multiple .late_fini() calls.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 235f3902643a..039b57e4644c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1943,6 +1943,7 @@ struct amdgpu_ip_block_status {
 	bool valid;
 	bool sw;
 	bool hw;
+	bool late_initialized;
 	bool hang;
 };
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 99a15cad6789..a58513f271e3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1424,6 +1424,7 @@ static int amdgpu_late_init(struct amdgpu_device *adev)
 				DRM_ERROR("late_init of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
 				return r;
 			}
+			adev->ip_block_status[i].late_initialized = true;
 		}
 	}
 
@@ -1469,8 +1470,11 @@ static int amdgpu_fini(struct amdgpu_device *adev)
 	}
 
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
+		if (!adev->ip_block_status[i].late_initialized)
+			continue;
 		if (adev->ip_blocks[i].funcs->late_fini)
 			adev->ip_blocks[i].funcs->late_fini((void *)adev);
+		adev->ip_block_status[i].late_initialized = false;
 	}
 
 	return 0;